Dimensional Mixing Increases the Efficiency of 2D/3D Perovskite Solar Cells.

Teale, Sam; Proppe, Andrew H; Jung, Eui Hyuk; Johnston, Andrew; Parmar, Darshan H; Chen, Bin; Hou, Yi; Kelley, Shana O; Sargent, Edward H

Teale, Sam; Proppe, Andrew H; Jung, Eui Hyuk; Johnston, Andrew; Parmar, Darshan H; Chen, Bin; Hou, Yi; Kelley, Shana O; Sargent, Edward H.

Afiliação

Teale S; The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada M5S 3G4.
Proppe AH; The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada M5S 3G4.
Jung EH; Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3G4.
Johnston A; The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada M5S 3G4.
Parmar DH; The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada M5S 3G4.
Chen B; The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada M5S 3G4.
Hou Y; The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada M5S 3G4.
Kelley SO; The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada M5S 3G4.
Sargent EH; Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3G4.

J Phys Chem Lett ; 11(13): 5115-5119, 2020 Jul 02.

Article em En | MEDLINE | ID: mdl-32511932

ABSTRACT

ABSTRACT

2D/3D heterojunction perovskite solar cells have demonstrated superior efficiency and stability compared to their fully 3D counterparts. Previous studies have focused on producing 2D layers containing predominantly n = 1 perovskite quantum wells. In this report we demonstrate a technique to introduce dimensional mixing into the 2D layer, and we show that this leads to more efficient devices relative to controls. Simulations suggest that the improvements are due to a reduction in trap state density and superior band alignment between the 3D/2D perovskite and the hole-transporting layer.

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Texto completo: 1 Bases de dados: MEDLINE Idioma: En Revista: J Phys Chem Lett Ano de publicação: 2020 Tipo de documento: Article